Vehicle Transmission Gear Shift Layout With Shared Shift Actuator
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Solution Overview
Problem
Current gear shift arrangements in vehicle transmissions require multiple individually controlled shift forks for each gear wheel, leading to high costs and significant space usage within the gearbox housing.
Innovation Solution
A gear shift arrangement utilizing axially movable connecting mechanisms and an actuator arrangement, where one actuator can control two shift forks, reducing the number of components and space required, by using connector elements that enclose each other and additional actuators to facilitate selective connections.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If each gear wheel has a separate and individually controlled shift fork, then the gear engagement is reliable, but the cost and space usage increase significantly
Solution Approach 1:
The patent combines multiple shift fork functions into a single actuator arrangement. The actuator connector element can selectively connect to multiple connector elements (first, second, third) that control different shift forks, allowing one actuator to perform the function of multiple individual actuators while maintaining reliable gear engagement control
Solution Approach 2:
The actuator arrangement is designed with universal functionality to control multiple different gear wheels. The actuator connector element can be selectively connected to different connector elements depending on which gear needs to be engaged, making a single actuator perform multiple gear shifting functions that previously required separate dedicated actuators
2Manufacturing precision
If each gear wheel has a separate and individually controlled shift fork, then the gear engagement control is precise, but the space required within the gearbox housing increases
Solution Approach 1:
The patent merges multiple separate actuator units into a single compact actuator arrangement with a common actuator connector element. This consolidation reduces the total space occupied within the gearbox housing while maintaining the precise control capability for each gear wheel through selective connection to different connector elements
3Adaptability or versatility
If multiple individually controlled shift forks are used, then each gear can be engaged independently, but the cost of the transmission arrangement increases
Solution Approach 1:
The patent combines multiple individual actuator units into a single actuator arrangement, reducing the total number of components that need to be manufactured and assembled. This merging reduces manufacturing costs while maintaining the capability for independent gear engagement through the selective connection mechanism between the actuator connector element and the various connector elements
Solution Approach 2:
The actuator arrangement provides universal functionality to control multiple gear wheels, eliminating the need for multiple specialized actuators. This multi-functionality reduces the overall component count and manufacturing complexity while preserving the ability to engage each gear independently when needed
Data Source
AI summary
The present invention relates to a gear shift arrangement (100) for a transmission arrangement of a vehicle, the gear shift arrangement comprising an axially movable first connecting mechanism (102) connectable to a first gear wheel for engagement of a first gear of the transmission arrangement; an axially movable second connecting mechanism (104) connectable to a second gear wheel for engagement of a second gear of the transmission arrangement; an actuator arrangement (106) configured to controllably connect the first connecting mechanism (102) and the first gear wheel to each other, and to controllably connect the second connecting mechanism (104) and the second gear wheel to each other, wherein the first connecting mechanism (102) comprises a first connector element (108), the second connecting mechanism (104) comprises a second connector element (110) and the actuator arrangement (106) comprises an actuator connector element (112), wherein the second connector element (110) at least partially enclosing the actuator connector element (112), and the actuator connector element (112) at least partially enclosing the first connector element (108), wherein the gear shift arrangement (100) further comprises means (114) for selectively connecting the actuator connector element (112) to the first (108) and second (110) connector elements.